Object Positioning Or Aligning Patents (Class 378/20)
  • Publication number: 20140037050
    Abstract: The invention relates to means for determining the spatial configuration of a biological body (P) on a surface, particularly on the surface of a patient support (150). One embodiment of these means is a sensor system (110) that can be applied to a patient support (150) and that comprises a plurality of sensor units (111), wherein each of these sensor units (111) has an adjacent sensitive zone (112) in which the presence of a biological body (P) induces a detection signal. The sensor unit may particularly comprise a microwave coil (111).
    Type: Application
    Filed: April 12, 2012
    Publication date: February 6, 2014
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventor: Falk Uhlemann
  • Patent number: 8638905
    Abstract: A system for radiotherapy that includes a couch upon which a patient being treated by the system is positioned, the couch having continuous arc rotation for delivery accelerated irradiation to the patient.
    Type: Grant
    Filed: January 4, 2011
    Date of Patent: January 28, 2014
    Assignee: William Beaumont Hospital
    Inventors: Di Yan, Alvaro Martinez
  • Patent number: 8633445
    Abstract: An imaging method includes obtaining a first image data for a subset of a target region, the subset of the target region having a first metallic object, obtaining a second image data for the target region, and using the first and second image data to determine a composite image. A imaging system includes a first detector configured to provide a first projection data using a first radiation having high energy, and a second detector configured to provide a second projection data using a second radiation having low energy, wherein the first detector has a first length, the second detector has a second length, and the first length is less than 75% of the second length.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: January 21, 2014
    Assignees: Varian Medical Systems, Inc., Varian Medical Systems International AG
    Inventors: Josh Star-Lack, Michael Green, Heinrich Riem, Timothy Guertin
  • Publication number: 20140016740
    Abstract: A method includes identifying at least first and second angles of rotation of the rotating gantry at which first and second pre-scans are acquired, wherein the first and the angles of rotation are different angles, acquiring data, via the imaging system while rotating the rotating gantry, only during a predetermined angular range about the first angle of rotation for a first plurality of rotations from the start to the end pre-scan positions and during the predetermined angular range about the second angle of rotation for a second plurality of rotations from the start to the end pre-scan positions, and reconstructing a first pre-scan based only on the data acquired during the predetermined angular range about the first angle of rotation and a second pre-scan based only on the data acquired during the predetermined angular range about the second angle of rotation.
    Type: Application
    Filed: March 30, 2012
    Publication date: January 16, 2014
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventor: Shlomo Gotman
  • Publication number: 20140003573
    Abstract: The invention relates to an X-ray CT system for measuring three-dimensional shapes, while the X-ray system is capable of extracting three-dimensional shape information with high accuracy in consideration of beam hardening depending on a material and thickness of a specimen. The X-ray CT system includes an optical distance meter and a CT image analyzing unit. The optical distance meter measures an outer shape of the specimen simultaneously with a measurement of projection data. The CT image analyzing unit calculates a boundary threshold for the specimen on the basis of a CT image and a measurement value of the outer shape.
    Type: Application
    Filed: June 26, 2013
    Publication date: January 2, 2014
    Inventors: Noriyuki SADAOKA, Yasushi NAGUMO
  • Patent number: 8611987
    Abstract: A method is disclosed for assisting in determination of the suitability of a patient for a scan of the heart of the patient using an X-ray computer tomograph. In at least one embodiment of the method, a) an electrocardiogram of the patient is recorded; b) the electrocardiogram is evaluated by predicting the occurrence time of at least the immediately following R wave on the basis of at least four immediately consecutive R waves of the electrocardiogram which were measured last, and comparing this with the actual measured occurrence time of the next R wave; and c) wherein the quality of the prediction is visualized qualitatively. Further, in at least one embodiment, a device is disclosed including an ECG instrument and a computation device for carrying out the method. At least one embodiment of the invention furthermore relates to a method and a device for scanning the heart of a patient on the basis of a prediction of R waves.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: December 17, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventors: Thomas Allmendinger, Heiko Mehldau, Thomas Seiler, Carsten Thierfelder
  • Patent number: 8594273
    Abstract: According to one embodiment, a CT scanning tabletop includes a tabletop body and an aid. The tabletop body has a placement surface where a subject is to be placed, and is formed in a manner that an X-ray transmission loss by one end portion in a longitudinal direction thereof is smaller than an X-ray transmission loss by a portion of the tabletop body other than the one end portion. The aid is provided on the one end portion in a manner that the aid is attachable and detachable by moving in advancing and retreating directions toward and away from the placement surface, the aid is configured to hold a part of the subject.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: November 26, 2013
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventor: Takahiro Ishii
  • Patent number: 8586955
    Abstract: An apparatus for attenuating high energy radiation including an attenuation member for attenuating high energy radiation in a high energy radiation field emitted from a high energy radiation source towards a subject. A control unit is provided for selectively activating the attenuation member. A method for attenuating high energy radiation is also disclosed.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: November 19, 2013
    Inventor: Ko Khee Tay
  • Publication number: 20130287166
    Abstract: An image processing device acquiring pseudo projection data by calculation when a virtual metallic body having a predetermined X-ray absorption coefficient is set in a photographic region of X-ray CT photography in a pseudo manner based on projection data, and the image processing device reconstructing the pseudo projection data to acquire pseudo CT image data. The image processing device acquires luminance (virtual metallic body luminance) of a virtual metallic body in the pseudo CT image data, and specifies a position of a metal equivalent region having luminance corresponding to the virtual metallic body luminance in normal CT image data. The image processing device acquires correction projection data by performing correction processing to the luminance of the metal equivalent region in the normal projection data, and the image processing device reconstructs the correction projection data to acquire correction CT image data.
    Type: Application
    Filed: April 26, 2013
    Publication date: October 31, 2013
    Applicants: J. Morita Manufacturing Corporation, Nihon Univsersity
    Inventors: Yoshinori Arai, Masakazu Suzuki
  • Publication number: 20130287167
    Abstract: The present invention relates to a data processing method for use in the field of radiation therapy and for determining a position of a treatment body part relative to an actual arrangement of at least one position of a treatment beam issued by a treatment device, the position being called monitoring tissue position and the treatment body part being a soft tissue part of an anatomical structure of a patient; the data processing method being constituted to be performed by a computer and comprising the following steps: providing CBCT data describing a three-dimensional CBCT image of the anatomical structure, the three dimensional CBCT image representing the treatment body part and a bony structure in a relative position to each other, called tissue-bone pre-alignment position, at a point in time, called pre-alignment time; providing x-ray data describing information on a position of the bony structure, called monitoring bone position, relative to the actual arrangement at a point in, time during treatment, call
    Type: Application
    Filed: January 12, 2011
    Publication date: October 31, 2013
    Applicant: Brainlab AG
    Inventors: Franz Gum, Stephan Erbel
  • Patent number: 8569720
    Abstract: A patient alignment system for a radiation therapy system. The alignment system includes multiple external measurement devices which obtain position measurements of components of the radiation therapy system which are movable and/or are subject to flex or other positional variations. The alignment system employs the external measurements to provide corrective positioning feedback to more precisely register the patient and align them with a radiation beam. The alignment system can be provided as an integral part of a radiation therapy system or can be added as an upgrade to existing radiation therapy systems.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: October 29, 2013
    Assignee: Loma Linda University Medical Center
    Inventors: Nickolas S. Rigney, Daniel C. Anderson, David A. Lesyna, Daniel W. Miller, Michael F. Moyers, Chieh C. Cheng, Michael A. Baumann
  • Publication number: 20130272492
    Abstract: A bed and gurney extender for selective attachment to a standard hospital bed or gurney for supporting the head of a patient during scanning, comprising: a support for supporting the head of the patient during scanning, wherein at least a portion of the support is X-ray transparent; and an adapter for selectively attaching the support to the bed or gurney.
    Type: Application
    Filed: October 23, 2012
    Publication date: October 17, 2013
    Inventors: Andrew P. Tybinkowski, Lidia Nemirovsky
  • Patent number: 8559596
    Abstract: Systems, methods, and related computer program products for medical imaging and image-guided radiation treatment (IGRT) are described. In one preferred embodiment, an IGRT system provides intrafraction target tracking based on a comparison of intrafraction x-ray tomosynthesis image data with initial x-ray tomosynthesis image data acquired with the patient in an initial treatment position, the initial x-ray tomosynthesis image data having an inherent registration with co-acquired image data from a setup imaging system integral with, or having known geometry relative to, the tomosynthesis imaging system. Repeated registration of intrafraction x-ray tomosynthesis image data with pre-acquired reference image data from a different frame of reference is not required during intrafraction radiation delivery. Advantages include streamlined intrafraction computation and/or reduced treatment delivery margins.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: October 15, 2013
    Assignee: Accuray Incorporated
    Inventors: Euan S. Thomson, Calvin R. Maurer, Jr.
  • Publication number: 20130266117
    Abstract: An X-ray CT apparatus according to an embodiment includes: an X-ray irradiator configured to emit X-rays to the examinee on a table; an X-ray detector configured to detect X-rays transmitted through the examinee on the table; a data collector configured to collect transmission data on those X-rays; a movement drive unit configured to move one of the table and the X-ray irradiator relative to the other in an outward direction and then in a homeward direction, the outward direction and homeward direction being opposite directions along a body axis of the examinee on the table; a position detector configured to detect a relative position between the table and the X-ray irradiator; and a data collection controller configured to control timings for starting and stopping data collection by the data collector, based on the relative position between the table and the X-ray irradiator.
    Type: Application
    Filed: April 9, 2013
    Publication date: October 10, 2013
    Applicants: Toshiba Medical Systems Corporation, Kabushiki Kaisha Toshiba
    Inventors: Noriyuki OOSHIMA, Takahito WATANABE
  • Publication number: 20130266116
    Abstract: Among other things, a rotatable drum for a radiology imaging modality is provided herein. The rotatable drum comprises a bore, defined by an inner circumference of a sidewall of the rotatable drum. In one embodiment, the sidewall comprises one or more apertures through which radiation may pass. By way of example, a radiation source and a detector array may be mounted outside of the bore (e.g., on an outside surface of the sidewall) and apertures in the sidewall may permit radiation to pass from the radiation source to the detector array without being attenuated by the sidewall of the drum. In another embodiment, the detector array may be comprised of a plurality of detector modules that may be individually mounted/dismounted from the rotatable drum, and in one example, may provide structural support to the rotatable drum.
    Type: Application
    Filed: April 5, 2012
    Publication date: October 10, 2013
    Applicant: Analogic Corporation
    Inventors: Daniel Abenaim, Ronald E. Swain
  • Patent number: 8550711
    Abstract: Lesion positioner systems and, which perform positioning of a lesion A by moving a top board for allowing a subject to be placed thereon, set an isocenter of a diagnostic 3D imaging unit as a virtual isocenter at the time when a treatment table is in a 3D imaging diagnosis position, and positions the lesion A to the virtual isocenter, based on a three-dimensional diagnostic image in consideration of particle beam therapy. A treatment table moving mechanism moves the treatment table to the treatment position relative to the particle beam therapy system while maintaining states of the top board and the lesion positioner systems and at the time of positioning, thereby positioning the lesion A to the isocenter of the particle beam therapy system.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: October 8, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hironori Maeda, Hiroshi Otani
  • Patent number: 8548215
    Abstract: The invention provides methods and apparatus for image processing that perform image segmentation on data sets in two- and/or three-dimensions so as to resolve structures that have the same or similar grey values (and that would otherwise render with the same or similar intensity values) and that, thereby, facilitate visualization and processing of those data sets.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: October 1, 2013
    Assignee: PME IP Australia Pty Ltd
    Inventors: Malte Westerhoff, Detlev Stalling, Martin Seebass
  • Patent number: 8548559
    Abstract: A method for locating a guide wire axis on a femoral neck comprises the steps of tracking a position and orientation of a femur; registering a frame of reference with respect to the position and orientation of the femur from a first registration probe mounted onto the femur in a predetermined configuration, the frame of reference having preoperative planned data pertaining to the femoral neck; digitizing femoral neck data with respect to the position and orientation of the femur from a second registration probe positioned onto the femoral neck at desired orientations; calculating a position and orientation of the guide wire axis with respect to the position and orientation of the femur as a function of the preoperative planned data and the femoral neck data.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: October 1, 2013
    Assignee: Orthosoft, Inc.
    Inventors: Antony Hodgson, Kevin Bryant Inkpen, Carolyn Anglin
  • Publication number: 20130251101
    Abstract: An X-ray CT apparatus according to an embodiment includes: a table on which an examinee lies down; an X-ray irradiator including an X-ray tube emitting X-rays to the examinee on the table and a diaphragm blocking the X-rays and capable of opening/closing; an X-ray detector detecting X-rays transmitted through the examinee on the table after being emitted by the X-ray irradiator and passing through the diaphragm; a rotating gantry supporting the X-ray irradiator and detector; a rotation drive unit rotating the rotating gantry about a body axis of the examinee on the table; a movement drive unit moving the table in a direction of the body axis of the examinee on the table; a positional information acquirer acquiring positional information on the moving table; and a controller controlling opening and closing operations of the diaphragm of the X-ray irradiator based on the positional information on the table.
    Type: Application
    Filed: March 21, 2013
    Publication date: September 26, 2013
    Applicants: Toshiba Medical Systems Corporation, Kabushiki Kaisha Toshiba
    Inventors: Hideo SAITO, Jyunichi KIKUHARA, Yuki KATO
  • Publication number: 20130251100
    Abstract: There is provided an X-ray composite apparatus capable of performing, with one unit, X-ray CT and element analysis by fluorescent X-rays. The X-ray composite apparatus 100 includes an X-ray source 110 generating cone beam X-rays, a sample support 150 holding a sample S, collimator parts 130 and 140 capable of narrowing the cone beam X-rays to form parallel X-rays, depending on the intended use, between the X-ray source and the sample support 150, a two-dimensional detector 170 detecting the cone beam X-rays transmitted through the sample S, and a fluorescent X-ray detector 176 detecting fluorescent X-rays radiated from the sample S, and when the apparatus is used for X-ray CT, the apparatus irradiates the sample with the cone beam X-rays, while when the apparatus is used for fluorescent X-ray analysis, the apparatus irradiates the sample S with the parallel X-rays.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 26, 2013
    Applicant: RIGAKU CORPORATION
    Inventors: Katsunari SASAKI, Yukihiro HARA, Kiyoshi AKIYAMA
  • Publication number: 20130251102
    Abstract: According to the present embodiment, an image diagnosis apparatus includes a first image taking device that takes an image of a patient placed on a couchtop by using an X-ray emission; a second image taking device that takes images in positions by moving an image taking position of the patient by a predetermined distance at a time, along the body-axis direction; a position estimating unit; and a correction processing unit. The position estimating unit estimates a couchtop position for each of the image taking positions of the second image taking device, based on information about warping of the couchtop of the first image taking device. The correction processing unit uses information about the couchtop positions estimated by the position estimating unit, for performing a position correcting process on the images obtained by the image taking devices.
    Type: Application
    Filed: May 10, 2013
    Publication date: September 26, 2013
    Applicants: Toshiba Medical Systems Corporation, Kabushiki Kaisha Toshiba
    Inventors: Yasuhiro NOSHI, Manabu Teshigawara, Satoru Nakanishi, Takuzo Takayama
  • Publication number: 20130235970
    Abstract: An image processing device of a computer tomography system includes an interface and a calibration data determiner. The interface is implemented to receive a first set of X-ray recordings of an object to be examined from first discrete recording angles and to receive a second set of X-ray recordings of the object to be examined from second discrete recording angles. The calibration data determiner is implemented to determine calibration data for the computer tomography system on the basis of the first set. The first set is further recorded during a first rotation run wherein the computer tomography system and the object to be examined rotate relative to each other, wherein the second set is recorded during at least a further rotation run after the first rotation run. On the basis of the calibration data and the first and second sets a computer tomography recording is reconstructable.
    Type: Application
    Filed: February 27, 2013
    Publication date: September 12, 2013
    Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventor: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
  • Publication number: 20130230134
    Abstract: An apparatus for reducing photodiode thermal gain coefficient includes a bulk semiconductor material having a light-illumination side. The bulk semiconductor material includes a minority charge carrier diffusion length property configured to substantially match a predetermined hole diffusion length value and a thickness configured to substantially match a predetermined photodiode layer thickness. The apparatus also includes a dead layer coupled to the light-illumination side of the bulk semiconductor material, the dead layer having a thickness configured to substantially match a predetermined thickness value and wherein an absolute value of a thermal coefficient of gain due to the minority carrier diffusion length property of the bulk semiconductor material is configured to substantially match an absolute value of a thermal coefficient of gain due to the thickness of the dead layer.
    Type: Application
    Filed: March 29, 2013
    Publication date: September 5, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Wen Li, Jonathan David Short, George Edward Possin
  • Patent number: 8520798
    Abstract: Methods, computer-readable mediums, and systems are provided. In one embodiment, a method detects at least one faulty X-ray detector signal and adjusts a conveyor speed and/or a gantry speed in accordance with the detection to increase information for image reconstruction. In another embodiment, a method detects a high volume time. Upon detection of the high volume time conveyor speed and gantry speed is increased during the high volume time. After expiration of the high volume time, the conveyor speed and gantry speed is reduced. In yet other embodiments, the computer-readable mediums and systems are also provided which perform similar features recited by the above methods.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: August 27, 2013
    Assignee: Morpho Detection, Inc.
    Inventors: Ronald Alan Gatten, Ugo DiGirolamo
  • Patent number: 8509383
    Abstract: A system and method of optimizing delivery of a radiation therapy treatment. The system optimizes treatment delivery in real-time to take into account a variety of factors, such as patient anatomical and physiological changes (e.g., respiration and other movement, etc.), and machine configuration changes (e.g., beam output factors, couch error, leaf error, etc.).
    Type: Grant
    Filed: October 27, 2008
    Date of Patent: August 13, 2013
    Assignee: Tomotherapy Incorporated
    Inventors: Weiguo Lu, Mingli Chen, Quan Chen, Kenneth J. Ruchala, Gustavo H. Olivera
  • Patent number: 8498464
    Abstract: A method and device are provided for matching a patient coordinate system (PCS) of a nuclear medical imaging scanner with a coordinate system of a CT scanner in a multimodality modular imaging system, based on a predefined relationship between a vertical position of a patient bed during the NM scan; an axial position of the patient bed during the NM scan; an axial distance between a gantry of the NM scanner and a gantry of the CT scanner; and a vertical distance between a center of orbit of the NM scanner and a center of rotation of the CT gantry.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: July 30, 2013
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Ray S. Xu, James T. Chapman
  • Patent number: 8471222
    Abstract: A radiotherapy apparatus control method according to the present invention includes: a step S6 of calculating rotational and first translational correction amounts based on a position and orientation of a first region represented by a radioscopic image of a subject; and a step S9 of calculating a second translational correction amount based on a position and orientation of the second region represented by the radioscopic image and the rotational correction amount; and a step S10 of driving a couch so that it rotates by the rotational correction amount and translates by the second translational correction amount. The first region is larger than the second region. According to such a method, the second region can be arranged in a predetermined position at higher accuracy compared with a case where the position of the couch is adjusted by using the position and orientation of only one of the first and second regions.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: June 25, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Takanobu Handa, Shuji Kaneko, Noritaka Yanai
  • Publication number: 20130156152
    Abstract: A method of maintaining a constant iso-center point, while dynamically changing an area of interest during an imaging procedure is provided. The method comprises: allowing a user to move from an initial area of interest to new area of interest by allowing permissible axes motions; dynamically calculating the iso-center point while moving from the initial area of interest to the new area of interest as a function of relative distance between the initial area of interest and the new area of interest and as a function of parameters indicating relative motion of permissible axes; identifying the new area of interest by using at least one permissible axis motion; and calculating the iso-center point at the new area of interest after locking all the permissible axes motions except table tilt axis movement.
    Type: Application
    Filed: December 20, 2011
    Publication date: June 20, 2013
    Inventors: Hiteshkumar T. Boda, Gurudatt S. Kamat
  • Publication number: 20130156150
    Abstract: A radiation tomography apparatus comprising a first imaging device for taking tomography images of a subject by introducing the subject in an introduction direction of the subject, a support member for supporting the subject, a support-member moving device for moving the support member in the introduction direction of the subject, a support-member movement controller for controlling the support-member moving device, a first cylinder provided in a first imaging view field of the first imaging device and having an opening extending in the introduction direction for introducing the support member and a first positioning device for positioning the first cylinder relative to the first imaging view field, the first cylinder guiding the movable support member.
    Type: Application
    Filed: December 19, 2012
    Publication date: June 20, 2013
    Applicant: SHIMADZU CORPORATION
    Inventor: SHIMADZU CORPORATION
  • Publication number: 20130148778
    Abstract: A subject support (118) for an imaging system (100) includes a moveable portion (122) that includes a surface (204) on which the subject is loaded and that is configured to move into an examination region of the imaging system where the subject is to be scanned. The support further includes a scan position identifier (126) that generates a signal indicative of at least one of a start scan position or an end scan position for a predetermined region of interest of the subject based on a location of the region of interest on the moveable portion of the subject support for an arbitrary relative position of the moveable portion with respect to the examination region.
    Type: Application
    Filed: August 10, 2011
    Publication date: June 13, 2013
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Jacob Durgan, Nabi Abraham Cohn, John Cressman, James Thomas Richards, Shlomo Gotman
  • Publication number: 20130142303
    Abstract: An X-ray image diagnosis apparatus according to embodiments includes: a table on which an examinee lies down; a table driving unit configured to move the table upward and downward; an imaging device configured to take a side image of the examinee by irradiating a side of the examinee on the table with X-rays and detecting X-rays transmitted through the examinee; and a controller configured to control the table driving unit so that the table driving unit moves the table upward or downward to make a center position of the examinee on the table in a thickness direction of the examinee coincide with a center position of the side image in an upward-downward moving direction of the table.
    Type: Application
    Filed: November 28, 2012
    Publication date: June 6, 2013
    Inventor: Takahiro GOTO
  • Publication number: 20130136228
    Abstract: A medical imaging apparatus provided with a position recognition member, capable of achieving a precise position recognition without an additional calibration process and preventing the position recognition errors on account of a long term use of components includes an X-ray generating portion configured to generate X-rays and transmit the X-rays, an X-ray detecting portion configured to detect the X-rays transmitted from the X-ray generating portion, a moving portion provided on at least one of the X-ray generating portion and the X-ray detecting portion to move the at least one of the X-ray generating portion and the X-ray detecting portion, and a position recognition member comprising a bar code portion configured to recognize a position of the at least one of the X-ray generating portion and the X-ray detecting portion, which move along the moving portion, and a bar code reader portion to recognize the bar code portion.
    Type: Application
    Filed: November 26, 2012
    Publication date: May 30, 2013
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Sumsung Electronics Co., Ltd.
  • Patent number: 8428326
    Abstract: Systems and methods for ultrasound simulation using depth peeling are disclosed. In one disclosed embodiment, a method includes the steps of receiving a sensor signal including a position and an orientation of a simulated ultrasound device, the position and orientation associated with a virtual physical environment comprising a first virtual object; determining a first peel associated with the first virtual object; determining a second peel associated with the first virtual object; determining a first characteristic of a pixel located between the first peel and the second peel; generating a display signal based on the first characteristic, the display signal configured to cause a visual display of the virtual physical environment; and outputting the display signal to a display device.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: April 23, 2013
    Assignee: Immersion Corporation
    Inventors: Robert B. Falk, Tamas Perlaki, Milan Ikits
  • Patent number: 8422628
    Abstract: Provided is a medical X-ray CT imaging apparatus including: a base (22); a support part (30) including a support arm part (30) that supports an X-ray source (36) and an X-ray detector (37) so as to be opposed to each other, and a rotation support part that supports the support arm part (32) in a rotatable manner with respect to the base (22); and a rotary drive part that rotatively drives the support part (30). At least one of the base (22) and the rotary support part (40) includes a cavity (48) forming a space around a rotation axis (A). The cavity (48) is provided with a cylindrical body (60) disposed in a rotatable state with respect to the support part (30).
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: April 16, 2013
    Assignee: J. Morita Manufacturing Corporation
    Inventor: Ryuichiro Niizeki
  • Patent number: 8411814
    Abstract: A position of a center detector of a radiation scanner can be determined without shutting down the scanner and/or manually positioning a phantom in the scanning field of the scanner. A phantom, comprising a target, is scanned to create an axial image of the phantom. The target is masked in the axial image, producing a masked axial image of the phantom. The masked axial image is reprojected in projection space, and the axial reprojection is compared to an axial projection or a rebinned axial projection of the phantom that was used to create the axial image. A target axial projection of data related to the masked target, created from the comparison of the axial projection or the rebinned axial projection and the axial reprojection, is used to determine the position of the center detector.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: April 2, 2013
    Assignee: Analogic Corporation
    Inventors: Ram C. Naidu, Sergey B. Simanovsky, David Schafer
  • Publication number: 20130077741
    Abstract: An apparatus for cone beam computed tomography of an extremity has a digital radiation detector and a first device to move the detector along a circular detector path extending so that the detector moves both at least partially around a first extremity of the patient and between the first extremity and a second, adjacent extremity. The detector path has radius R1 sufficient to position the extremity approximately centered in the detector path. There is a radiation source with a second device to move the source along a concentric circular source path having a radius R2 greater than radius R1, radius R2 sufficiently long to allow adequate radiation exposure of the first extremity for an image capture by the detector. A first circumferential gap in the source path allows the second extremity to be positioned in the first circumferential gap during image capture.
    Type: Application
    Filed: November 20, 2012
    Publication date: March 28, 2013
    Inventors: John Yorkston, Robert Asento, Jeffrey H. Siewerdsen, David H. Foos
  • Patent number: 8406845
    Abstract: Image tracking systems, and corresponding methods, are described. In some embodiments, conventional imaging components are placed on a platform having wheels, thereby providing a mechanism for imaging a moving subject. In other embodiments, conventional imaging components are situated on non-parallel rails, and moved along those rails, thereby providing a mechanism for imaging an anatomical region of a subject as that region moves in two dimensions. For yet other embodiments, image recognition and tracking approaches are provided to track the movement of a non-stationary anatomical region. The tracking of the non-stationary anatomical region permits imaging of a moving anatomy. For some embodiments, the anatomy moves within its normal range of motion.
    Type: Grant
    Filed: September 1, 2005
    Date of Patent: March 26, 2013
    Assignee: University of Tennessee Research Foundation
    Inventors: Richard D. Komistek, William R. Hamel, Douglas A. Dennis
  • Publication number: 20130044857
    Abstract: The invention relates to a medical x-ray imaging apparatus including a support structure (1) which supports a substantially ring-shaped structure, an O-arm (2) supporting imaging means (21, 22), to which O-arm (2) is arranged an examination opening (4). The ring-shaped structure (2) supporting the imaging means is arranged movable with respect to said support construction (1) at least in vertical direction. A patient stool (30) is arranged to be positioned in connection with the apparatus, as well as positioning means (32, 33, 34) in connection with said examination opening (4) for positioning the patient stool (30) in the examination opening (4).
    Type: Application
    Filed: April 28, 2011
    Publication date: February 21, 2013
    Applicant: PLANMED OY
    Inventor: Jouni Kinnunen
  • Patent number: 8378325
    Abstract: A medical device includes a moving gantry, on which a radiation source is arranged, and a collision-protection apparatus for preventing a patient from colliding with the moving gantry. The gantry is operable to be moved around a patient-positioning apparatus. The collision-protection apparatus can be configured as a mechanical collision-protection apparatus that is operable to be positioned between the patient and the moving gantry. The collision-protection apparatus can also be configured as a collision-monitoring apparatus that detects the crossing of a predefined volume by an object, the collision-monitoring apparatus having a control apparatus that controls the motion of the gantry as a function of whether a crossing of the volume has or has not been detected.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: February 19, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventor: Franz Fadler
  • Patent number: 8379794
    Abstract: The present invention provides a method for estimation of retrospective and real-time 3D target position by a single imager. The invention includes imaging a target on at least one 2D plane to determine 2D position and/or position components of the target, and resolving a position and/or position component along at least one imager axis of the target using a spatial probability density. The present invention provides a probability-based method for accurate estimation of the mean position, motion magnitude, motion correlation, and trajectory of a tumor from CBCT projections. The applicability of the method for tumors with periodic respiratory motion and for prostate are provided. Clinical feasibility is demonstrated for a pancreas tumor. The method includes monoscopic tracking of the 3D prostate position utilizing the spatial probability density to estimate the unresolved motion from the resolved motion. The method is applicable to prostate tracking even with a population-based probability density.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: February 19, 2013
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Per Rugaard Poulsen, Byungchul Cho, Katja Langen, Patrick Kupelian, Paul J. Keall
  • Patent number: 8379791
    Abstract: A method and apparatus are provided to improve CT image acquisition using a displaced acquisition geometry. A CT apparatus may be used having a source (102) and a detector (104) transversely displaced from a center (114) of a field of view (118) during acquisition of the projection data. The amount of transverse displacement may be determined based on the size of the object (108). The source and the detector may be adjusted to vary the size of the transverse field of view. The first data set acquired by the detector may be reconstructed and used to simulate missing projection data that could not be acquired by the detector at each projection angle. The measured projection data and the simulated projection data may be used to obtain a second data set. The second data set may be compared to the first data set to produce a corrected data set.
    Type: Grant
    Filed: October 5, 2009
    Date of Patent: February 19, 2013
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Peter Forthmann, Thomas Koehler, Udo Van Stevendaal, Matthias Bertram, Steffen Wiesner, Colas Schretter
  • Patent number: 8373143
    Abstract: This invention relates generally to treatment of solid cancers. More particularly, the invention relates to a computer controlled patient positioning, immobilization, and repositioning method and apparatus used in conjunction with multi-field charged particle cancer therapy coordinated with patient respiration patterns and further in combination with charged particle beam injection, acceleration, extraction, and/or targeting methods and apparatus.
    Type: Grant
    Filed: December 12, 2009
    Date of Patent: February 12, 2013
    Inventor: Vladimir Balakin
  • Patent number: 8374312
    Abstract: A radiotherapy couch top includes a cantilevered section adapted to support at least a portion of a prone patient's upper body. The cantilevered section may be provided with an opening configured to allow at least a portion of the body portion to extend into from above and to allow a radiation beam to pass through from below.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: February 12, 2013
    Assignee: Varian Medical Systems, Inc.
    Inventor: Stanley Mansfield
  • Patent number: 8358737
    Abstract: An X-ray treatment apparatus comprises a low energy X-ray generator for detecting a marker, a marker sensor detecting a position of the marker fixed in the patient to a couch, and both low energy X-ray generator and the marker sensor are installed in the couch, a high energy X-ray generator for treatment, a X-ray sensor for treatment detecting the high energy X-ray for treatment. An X-ray treatment method using the X-ray treatment apparatus comprises the steps of detecting a position of a marker by the marker sensor, irradiating to a lesion the high energy X-ray for treatment, detecting the penetrated high energy X-ray for treatment by the X-ray sensor for treatment, modifying the beam profile, the dosage or/and the radiation direction of the X-ray for treatment according to the latest data of the sensors, performing the next radiation for the lesion.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: January 22, 2013
    Assignee: Accuthera Inc.
    Inventor: Eiji Tanabe
  • Patent number: 8350221
    Abstract: The present invention relates to an apparatus (10) for generating countable pulses (30) from impinging X-ray (12, 14) in an imaging device (16), in particular in a computer tomograph, the apparatus (10) comprising a pre-amplifying element (18) adapted to convert a charge pulse (20) generated by an impinging photon (12, 14) into an electrical signal (22) and a shaping element (26) having a feedback loop (28) and adapted to convert the electrical signal (22) into an electrical pulse (30), wherein a delay circuit (38) is connected to the feedback loop (28) such that a time during which the feedback loop (28) collects charges of the electrical signal (22) is extended in order to improve an amplitude of the electrical pulse (30) at an output (56) of the shaping element (26). The invention also relates to a corresponding imaging device (16) and a corresponding method.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: January 8, 2013
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Roger Steadman Booker, Christian Baeumer, Christoph Herrmann, Guenter Zeitler, Hans Kr├╝ger, Walter Ruetten, Oliver Muelhens
  • Publication number: 20130003919
    Abstract: A CT scan device including a CT scanner and an auxiliary table is proposed. The CT scanner has a scanning area and a scanning table, with the scanning table able to shift straight and pass through the scanning area. The auxiliary table is arranged on a side of the CT scanner opposite to another side where the scanning table is disposed, with the auxiliary table having an extension portion and a body, wherein a connection end of the extension portion connects with the body, an abutting end of the extension portion abutting against the scanning table, the extension portion has an inclined surface raised from the connection end to the abutting end, and the scanning table is able to push the auxiliary table moving relatively to the scanning area.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 3, 2013
    Inventors: Chih-Kun Hsiao, Feng-Te Tsai, Yuan-Kun Tu, Ting-Sheng Lin, Li-Chang Lin, Tsung-Tien Haung
  • Publication number: 20120275562
    Abstract: An X-ray tube is provided adapted to generate X-ray beams, comprising a first and a second deflection device mounted external or internal to the X-ray tube between a cathode and an anode in a diagonal manner for focal spot deflection in a combined x- and y-direction. The first and second deflection devices are triggered alternately such that only one deflection device is activated at a time. The first and second deflection devices may be triggered according to a predetermined switching sequence, e.g. producing a predetermined deflection pattern of the focal spot. Thereby, an improved x- and z-flying focal spot methodology is provided.
    Type: Application
    Filed: January 4, 2011
    Publication date: November 1, 2012
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Allan Kautz, Salvatore Perno, Gary Brooks, George Awad, Jose Angelo Buan
  • Patent number: 8270568
    Abstract: During treatment by brachytherapy, radiation passes beyond the target volume and delivers radiation dose to adjacent tissue such as the lungs and, especially in the case of treatment of the left breast, to the heart. The heart is particularly vulnerable to radiation; to minimise the dose it receives in such circumstances, we propose an apparatus for treatment by brachytherapy comprising an X-ray source sized for insertion into a patient, a respiration state monitor, and a control apparatus adapted to receive respiration state information from the respiration state monitor and control the output of the X-ray source; the control apparatus being arranged to operate the X-ray source at a first output level when the respiration state monitor indicates a degree of lung inflation above a first preset threshold and operate the X-ray source at a second and lower output level when the respiration state monitor indicates a degree of lung inflation below a second preset threshold.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: September 18, 2012
    Assignee: Elekta AB (Publ)
    Inventor: William Robert Pitt
  • Patent number: 8269195
    Abstract: A patient alignment system for a radiation therapy system. The alignment system includes multiple external measurement devices which obtain position measurements of components of the radiation therapy system which are movable and/or are subject to flex or other positional variations. The alignment system employs the external measurements to provide corrective positioning feedback to more precisely register the patient and align them with a radiation beam. The alignment system can be provided as an integral part of a radiation therapy system or can be added as an upgrade to existing radiation therapy systems.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: September 18, 2012
    Assignee: Loma Linda University Medical Center
    Inventors: Nickolas S. Rigney, Daniel C. Anderson, David A. Lesyna, Daniel W. Miller, Michael F. Moyers, Chieh C. Cheng, Michael A. Baumann
  • Publication number: 20120224667
    Abstract: Apparatus and methods for therapy delivery are disclosed. In one embodiment, a therapy delivery system includes a plurality of movable components including a radiation therapy nozzle and a patient pod for holding a patient, a patient registration module for determining a desired position of at least one of the plurality of movable components, and a motion control module for coordinating the movement of the least one of the plurality of movable components from a current position to the desired position. The motion control module includes a path planning module for simulating at least one projected trajectory of movement of the least one of the plurality of moveable components from the current position to the desired position.
    Type: Application
    Filed: April 13, 2012
    Publication date: September 6, 2012
    Inventors: Chieh C. Cheng, David A. Lesyna, Michael F. Moyers